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mom

[mom]
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noun Informal.
  1. mother1.
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Origin of mom

short for momma

m.o.m.

  1. middle of month.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for mom

mom

noun
  1. mainly US and Canadian an informal word for mother 1
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mom

n.

1867, American English, perhaps a shortening of mommy; also see mamma. Adjectival phrase mom and pop dates from 1951.

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Online Etymology Dictionary, © 2010 Douglas Harper